Air broadening of the hydrogen halides—I. N2-broadening and shifting in the HCl fundamental

Analytical Evaluation of the Maxwell–Boltzmann Velocity Average in Pressure-Broadened Half-Width Calculations

“…The application of linked-cluster techniques (41) to the BKG formalism leads to developments (19)(20)(21)(22) that eliminate the cutoff procedure that characterized earlier theories (16)(17)(18)27). The formalism is complex valued; thus the half-widths and line shifts are obtained from a single calculation.…”

Relaxation and Lineshape of the 500.4-GHz Line of Ozone Perturbed by N2 and O2

“…[5] in which the mean relative speeds v is replaced by v r . However, the code used does not allow the analysis of the low relative speed region for which orbiting collisions can take place (55). Since only a 10 -15% fraction of relative speed classes belongs to this region corresponding to v r Ͻ 300 m/s, an extrapolation of ␥(v r ) down to v r ϭ 0 has been made using the approximated law ␥(v r ) ϳ (v r )…”

N2- and O2-broadening coefficients in the ν2 and ν5 bands of 12CH3F at 183 and 298K

“…These orbiting collisions cannot be considered in the frame of the formalism of Robert and Bonamy. We have eliminated their contribution using the method developed by Looney and Herman [20].…”